Opening help and support is "fn+f 1"

Open the print options window. Is "fn+f2"

Opening a web browser is "fn+f3"

Switching the display screen image between the laptop display screen and the external display is "fn+f4".

The startup sleep mode is "fn+f5"

Start fast locking is "fn+f6"

Lowering the screen brightness is fn+f7 "

Improving the screen brightness is "fn+f8"

Enabling speaker mute is "fn+f9"

Using hotkeys is a 3 function.

Lowering the speaker volume is "fn+f 1 1".

Increasing the volume of the speaker is "fn+f 12"